Those into photography can be like big kids, a new lens, new accessory or even a new camera can set them off. For those that swear by their current camera or camera system, this list should serve up some impressive lenses for those with either DSLRs or mirrorless cameras from the likes of Sony as well as Fujifilm.
Fujinon XF 56mm F1.2 R
If there's one thing that Fujifilm is good at, it's making great lenses. This 56mm prime lens has just one focal length, but as a result it has an aperture of f/1.2. Letting so much light in makes this perfect for low-light shooting as well as bokeh photography and portraits.
Sony SELP18105G E PZ 18-105mm F4 G OSS
This option for Sony NEX cameras, using the E-mount, is a simple zoom lens with a decent aperture for such a focal length. It's a little on the pricier side of things but it should produce much better images than the kit lens that comes with the majority of Sony mirrorless cameras. Versatile enough for the majority of situations, this is well worth looking at.
Nikon AF-S DX NIKKOR 35mm f/1.8G
This compact Nikon lens is a great addition to any Nikon user's arsenal. It's got a wide aperture at f/1.8 and it's nice and compact as well. The fixed 35mm focal length will turn any DSLR into an investigative workhorse, and force users to get up, close and personal to their subject.
Tamron Auto Focus 18-200mm f/3.5-6.3 XR Di II LD Aspherical (IF) Macro Zoom Lens
This Tamron option is something that will work for both Nikon and Canon DSLRs as well as Sony options as well. It has a built-in motor for auto-focus so it will work no matter which version you choose. This is a versatile option that's affordable as well, offering a wide-angle 18mm focal length up to a fairly long 200mm zoom length. Tamron has been making budget-minded lenses for some time now, so this should get the job done.
Canon EF 50mm f/1.8 STM Lens
This compact and simple option from Canon is a great lens to add to any camera bag. It's a 50mm prime with an aperture of f/1.8 which lets a lot of light in and it also features Canon's STM motor for quiet operation all the time. So, altogether a great option.
Fujinon XF 55-200mm f:3.5-4.8 R LM OIS Zoom Lens
This large Fujinon lens is built for the X-mount line of cameras, and will help those that already have the wide-angle box ticked. Great for zoom, portraits and reaching a subject that's just a little out of reach, there's a lot to like about a lens like this one, even if it is a little expensive.
Sony SEL50F18/B 50mm f/1.8 Lens for Sony E Mount Nex Cameras
This 50mm option from Sony is a great choice for anyone looking for a fixed-focal prime. With a wide f/1.8 this brings in a lot lot light, and there's little to complain about when it comes to imaging quality. It might be a little larger than other similar lenses for competing systems, but it works well and won't disappoint.
Sigma 150-500mm f/5-6.3 Auto Focus APO DG OS HSM Telephoto Zoom Lens
Now this is what you call a zoom lens. With a maximum focal length of 500mm this is great for those who like to photograph wildlife or bring out the smaller details in landscape shots. It has a built in grip/stand and it's available in configs for Sony, Nikon and Canon DSLRs and is highly recommended, especially at this sort of price.
Sigma 18-250mm f3.5-6.3 DC MACRO OS HSM
This versatile Sigma option is a fantastic second lens to get anyone that's just starting out in the world of interchangeable lenses. It's packed with all the usual bells and whistles, and has a lot on offer overall. Available for both Canon and Nikon cameras, this is an affordable choice for all kinds of users.
Nikon AF-S DX NIKKOR 55-300mm f/4.5-5.6G ED Zoom Lens
Nikon lenses have always been pretty great, but this is a nice addition to any Nikon camera bag out there. it's not too expensive and yet has a good 55 - 300mm zoom range, which means that while it's not that good a zoom lens, it keeps aperture fairly wide, so this is a good compromise.